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ramips: remove chunked-io patch and set spi->max_transfer_size instead

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Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Felix Fietkau
2018-02-22 10:09:30 +01:00
parent 46c49d8381
commit bcf4a5f474
8 changed files with 55 additions and 188 deletions
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18
target/linux/ramips/patches-4.14/0043-spi-add-mt7621-support.patch
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@@ -38,7 +38,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
obj-$(CONFIG_SPI_OC_TINY) += spi-oc-tiny.o
--- /dev/null
+++ b/drivers/spi/spi-mt7621.c
@@ -0,0 +1,483 @@
@@ -0,0 +1,491 @@
+/*
+ * spi-mt7621.c -- MediaTek MT7621 SPI controller driver
+ *
@@ -243,10 +243,12 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+ if (t->speed_hz < speed)
+ speed = t->speed_hz;
+
+ if (WARN_ON(len + t->len > 36)) {
+ status = -EIO;
+ goto msg_done;
+ }
+ /*
+ * m25p80 might attempt to write more data than we can handle.
+ * truncate the message to what we can fit into the registers
+ */
+ if (len + t->len > 36)
+ t->len = 36 - len;
+
+ for (i = 0; i < t->len; i++, len++)
+ data[len / 4] |= buf[i] << (8 * (len & 3));
@@ -426,6 +428,11 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+};
+MODULE_DEVICE_TABLE(of, mt7621_spi_match);
+
+static size_t mt7621_max_transfer_size(struct spi_device *spi)
+{
+ return 32;
+}
+
+static int mt7621_spi_probe(struct platform_device *pdev)
+{
+ const struct of_device_id *match;
@@ -472,6 +479,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+ master->bits_per_word_mask = SPI_BPW_MASK(8);
+ master->dev.of_node = pdev->dev.of_node;
+ master->num_chipselect = 2;
+ master->max_transfer_size = mt7621_max_transfer_size;
+
+ dev_set_drvdata(&pdev->dev, master);
+